... Ring Joint Flange/Stainless Steel Flange Type:Welded Neck, Blind, Threaded, Lap Joint, Socket Weld, Plate, SOH, SOP, Slip On (SO) FF, ... Weld, Plate, SOH, SOP, Slip On (SO) FF, RF, Plate, RTJMaterial:Carbon steel: C22.8, SS400, A105, A350, RST37. ... 2, P250GH, P245GH, P265GH, S235JR, SS400, SF440AMarking:On Required Ring Joint Flange/Stainless Steel Flange